vbox_mode.c@ 64400

Last change on this file since 64400 was 64400, checked in by vboxsync, 8 years ago
bugref:8614: Additions/common/VBoxVideo: make the code more self-contained: remove dependency on -RTErrConvertToErrno() in Linux vboxvideo.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 27.8 KB

Line
1	/* $Id: vbox_mode.c 64400 2016-10-24 15:59:01Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on
19	* ast_mode.c
20	* with the following copyright and permission notice:
21	*
22	* Copyright 2012 Red Hat Inc.
23	* Parts based on xf86-video-ast
24	* Copyright (c) 2005 ASPEED Technology Inc.
25	*
26	* Permission is hereby granted, free of charge, to any person obtaining a
27	* copy of this software and associated documentation files (the
28	* "Software"), to deal in the Software without restriction, including
29	* without limitation the rights to use, copy, modify, merge, publish,
30	* distribute, sub license, and/or sell copies of the Software, and to
31	* permit persons to whom the Software is furnished to do so, subject to
32	* the following conditions:
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
37	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
38	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
39	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
40	* USE OR OTHER DEALINGS IN THE SOFTWARE.
41	*
42	* The above copyright notice and this permission notice (including the
43	* next paragraph) shall be included in all copies or substantial portions
44	* of the Software.
45	*
46	*/
47	/*
48	* Authors: Dave Airlie <[email protected]>
49	*/
50	#include "vbox_drv.h"
51
52	#include <VBox/VBoxVideo.h>
53
54	#include <linux/export.h>
55	#include <drm/drm_crtc_helper.h>
56	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
57	# include <drm/drm_plane_helper.h>
58	#endif
59
60	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
61	uint32_t handle, uint32_t width, uint32_t height,
62	int32_t hot_x, int32_t hot_y);
63	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
64
65	/** Set a graphics mode. Poke any required values into registers, do an HGSMI
66	* mode set and tell the host we support advanced graphics functions.
67	*/
68	static void vbox_do_modeset(struct drm_crtc *crtc,
69	const struct drm_display_mode *mode)
70	{
71	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
72	struct vbox_private *vbox;
73	int width, height, bpp, pitch;
74	unsigned crtc_id;
75	uint16_t flags;
76
77	vbox = crtc->dev->dev_private;
78	width = mode->hdisplay ? mode->hdisplay : 640;
79	height = mode->vdisplay ? mode->vdisplay : 480;
80	crtc_id = vbox_crtc->crtc_id;
81	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
82	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
83	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
84	#else
85	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
86	#endif
87	/* This is the old way of setting graphics modes. It assumed one screen
88	* and a frame-buffer at the start of video RAM. On older versions of
89	* VirtualBox, certain parts of the code still assume that the first
90	* screen is programmed this way, so try to fake it. */
91	if ( vbox_crtc->crtc_id == 0
92	&& crtc->enabled
93	&& vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
94	&& vbox_crtc->fb_offset % (bpp / 8) == 0)
95	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
96	CRTC_FB(crtc)->bits_per_pixel, 0,
97	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
98	vbox_crtc->fb_offset / pitch + crtc->y);
99	flags = VBVA_SCREEN_F_ACTIVE;
100	flags \|= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
101	flags \|= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
102	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
103	crtc->x, crtc->y,
104	crtc->x * bpp / 8 + crtc->y * pitch,
105	pitch, width, height,
106	vbox_crtc->blanked ? 0 : bpp, flags);
107	}
108
109	static int vbox_set_view(struct drm_crtc *crtc)
110	{
111	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
112	struct vbox_private *vbox = crtc->dev->dev_private;
113	void *p;
114
115	/* Tell the host about the view. This design originally targeted the
116	* Windows XP driver architecture and assumed that each screen would have
117	* a dedicated frame buffer with the command buffer following it, the whole
118	* being a "view". The host works out which screen a command buffer belongs
119	* to by checking whether it is in the first view, then whether it is in the
120	* second and so on. The first match wins. We cheat around this by making
121	* the first view be the managed memory plus the first command buffer, the
122	* second the same plus the second buffer and so on. */
123	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
124	VBVA_INFO_VIEW);
125	if (p)
126	{
127	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
128	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
129	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
130	pInfo->u32ViewSize = vbox->available_vram_size - vbox_crtc->fb_offset
131	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
132	pInfo->u32MaxScreenSize = vbox->available_vram_size - vbox_crtc->fb_offset;
133	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
134	VBoxHGSMIBufferFree(&vbox->submit_info, p);
135	}
136	else
137	return -ENOMEM;
138	return 0;
139	}
140
141	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
142	{
143
144	}
145
146	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
147	{
148	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
149	struct vbox_private *vbox = crtc->dev->dev_private;
150
151	switch (mode) {
152	case DRM_MODE_DPMS_ON:
153	vbox_crtc->blanked = false;
154	break;
155	case DRM_MODE_DPMS_STANDBY:
156	case DRM_MODE_DPMS_SUSPEND:
157	case DRM_MODE_DPMS_OFF:
158	vbox_crtc->blanked = true;
159	break;
160	}
161	mutex_lock(&vbox->hw_mutex);
162	vbox_do_modeset(crtc, &crtc->hwmode);
163	mutex_unlock(&vbox->hw_mutex);
164	}
165
166	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
167	const struct drm_display_mode *mode,
168	struct drm_display_mode *adjusted_mode)
169	{
170	return true;
171	}
172
173	/* We move buffers which are not in active use out of VRAM to save memory. */
174	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
175	struct drm_framebuffer *fb,
176	int x, int y, int atomic)
177	{
178	struct vbox_private *vbox = crtc->dev->dev_private;
179	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
180	struct drm_gem_object *obj;
181	struct vbox_framebuffer *vbox_fb;
182	struct vbox_bo *bo;
183	int ret;
184	u64 gpu_addr;
185
186	/* push the previous fb to system ram */
187	if (!atomic && fb) {
188	vbox_fb = to_vbox_framebuffer(fb);
189	obj = vbox_fb->obj;
190	bo = gem_to_vbox_bo(obj);
191	ret = vbox_bo_reserve(bo, false);
192	if (ret)
193	return ret;
194	vbox_bo_push_sysram(bo);
195	vbox_bo_unreserve(bo);
196	}
197
198	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
199	obj = vbox_fb->obj;
200	bo = gem_to_vbox_bo(obj);
201
202	ret = vbox_bo_reserve(bo, false);
203	if (ret)
204	return ret;
205
206	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
207	if (ret) {
208	vbox_bo_unreserve(bo);
209	return ret;
210	}
211
212	if (&vbox->fbdev->afb == vbox_fb) {
213	/* if pushing console in kmap it */
214	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
215	if (ret)
216	DRM_ERROR("failed to kmap fbcon\n");
217	else
218	vbox_fbdev_set_base(vbox, gpu_addr);
219	}
220	vbox_bo_unreserve(bo);
221
222	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
223	vbox_crtc->fb_offset = gpu_addr;
224	if (vbox_crtc->crtc_id == 0) {
225	vbox->input_mapping_width = CRTC_FB(crtc)->width;
226	vbox->input_mapping_height = CRTC_FB(crtc)->height;
227	}
228	return 0;
229	}
230
231	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
232	struct drm_framebuffer *old_fb)
233	{
234	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
235	}
236
237	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
238	struct drm_display_mode *mode,
239	struct drm_display_mode *adjusted_mode,
240	int x, int y,
241	struct drm_framebuffer *old_fb)
242	{
243	struct vbox_private *vbox = crtc->dev->dev_private;
244	int rc = 0;
245
246	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
247	mutex_lock(&vbox->hw_mutex);
248	rc = vbox_set_view(crtc);
249	if (!rc)
250	vbox_do_modeset(crtc, mode);
251	/* Note that the input mapping is always relative to the first screen. */
252	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
253	vbox->input_mapping_width,
254	vbox->input_mapping_height);
255	mutex_unlock(&vbox->hw_mutex);
256	return rc;
257	}
258
259	static void vbox_crtc_disable(struct drm_crtc *crtc)
260	{
261
262	}
263
264	static void vbox_crtc_prepare(struct drm_crtc *crtc)
265	{
266
267	}
268
269	static void vbox_crtc_commit(struct drm_crtc *crtc)
270	{
271
272	}
273
274
275	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
276	.dpms = vbox_crtc_dpms,
277	.mode_fixup = vbox_crtc_mode_fixup,
278	.mode_set = vbox_crtc_mode_set,
279	/* .mode_set_base = vbox_crtc_mode_set_base, */
280	.disable = vbox_crtc_disable,
281	.load_lut = vbox_crtc_load_lut,
282	.prepare = vbox_crtc_prepare,
283	.commit = vbox_crtc_commit,
284
285	};
286
287	static void vbox_crtc_reset(struct drm_crtc *crtc)
288	{
289
290	}
291
292
293	static void vbox_crtc_destroy(struct drm_crtc *crtc)
294	{
295	drm_crtc_cleanup(crtc);
296	kfree(crtc);
297	}
298
299	static const struct drm_crtc_funcs vbox_crtc_funcs = {
300	.cursor_move = vbox_cursor_move,
301	.cursor_set2 = vbox_cursor_set2,
302	.reset = vbox_crtc_reset,
303	.set_config = drm_crtc_helper_set_config,
304	/* .gamma_set = vbox_crtc_gamma_set, */
305	.destroy = vbox_crtc_destroy,
306	};
307
308	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned i)
309	{
310	struct vbox_crtc *vbox_crtc;
311
312	vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
313	if (!vbox_crtc)
314	return NULL;
315	vbox_crtc->crtc_id = i;
316
317	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
318	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
319	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
320
321	return vbox_crtc;
322	}
323
324	static void vbox_encoder_destroy(struct drm_encoder *encoder)
325	{
326	drm_encoder_cleanup(encoder);
327	kfree(encoder);
328	}
329
330	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
331	static struct drm_encoder drm_encoder_find(struct drm_device dev, uint32_t id)
332	{
333	struct drm_mode_object *mo;
334	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
335	return mo ? obj_to_encoder(mo) : NULL;
336	}
337	#endif
338
339	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
340	{
341	int enc_id = connector->encoder_ids[0];
342
343	/* pick the encoder ids */
344	if (enc_id)
345	return drm_encoder_find(connector->dev, enc_id);
346	return NULL;
347	}
348
349
350	static const struct drm_encoder_funcs vbox_enc_funcs = {
351	.destroy = vbox_encoder_destroy,
352	};
353
354	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
355	{
356
357	}
358
359	static bool vbox_mode_fixup(struct drm_encoder *encoder,
360	const struct drm_display_mode *mode,
361	struct drm_display_mode *adjusted_mode)
362	{
363	return true;
364	}
365
366	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
367	struct drm_display_mode *mode,
368	struct drm_display_mode *adjusted_mode)
369	{
370	}
371
372	static void vbox_encoder_prepare(struct drm_encoder *encoder)
373	{
374
375	}
376
377	static void vbox_encoder_commit(struct drm_encoder *encoder)
378	{
379
380	}
381
382
383	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
384	.dpms = vbox_encoder_dpms,
385	.mode_fixup = vbox_mode_fixup,
386	.prepare = vbox_encoder_prepare,
387	.commit = vbox_encoder_commit,
388	.mode_set = vbox_encoder_mode_set,
389	};
390
391	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
392	{
393	struct vbox_encoder *vbox_encoder;
394
395	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
396	if (!vbox_encoder)
397	return NULL;
398
399	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
400	DRM_MODE_ENCODER_DAC
401	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
402	, NULL
403	#endif
404	);
405	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
406
407	vbox_encoder->base.possible_crtcs = 1 << i;
408	return &vbox_encoder->base;
409	}
410
411	/** Generate EDID data with a mode-unique serial number for the virtual
412	* monitor to try to persuade Unity that different modes correspond to
413	* different monitors and it should not try to force the same resolution on
414	* them. */
415	static void vbox_set_edid(struct drm_connector *connector, int width,
416	int height)
417	{
418	enum { EDID_SIZE = 128 };
419	unsigned char edid[EDID_SIZE] = {
420	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
421	0x58, 0x58, /* manufacturer (VBX) */
422	0x00, 0x00, /* product code */
423	0x00, 0x00,0x00, 0x00, /* serial number goes here */
424	0x01, /* week of manufacture */
425	0x00, /* year of manufacture */
426	0x01, 0x03, /* EDID version */
427	0x80, /* capabilities - digital */
428	0x00, /* horiz. res in cm, zero for projectors */
429	0x00, /* vert. res in cm */
430	0x78, /* display gamma (120 == 2.2). */
431	0xEE, /* features (standby, suspend, off, RGB, standard colour space,
432	* preferred timing mode) */
433	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
434	/* chromaticity for standard colour space. */
435	0x00, 0x00, 0x00, /* no default timings */
436	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
437	0x01, 0x01, 0x01, 0x01, /* no standard timings */
438	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
439	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
440	0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
441	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
442	0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
443	0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
444	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
445	0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
446	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
447	0x20,
448	0x00, /* number of extensions */
449	0x00 /* checksum goes here */
450	};
451	int clock = (width + 6) * (height + 6) * 60 / 10000;
452	unsigned i;
453	unsigned sum = 0;
454
455	edid[12] = width & 0xff;
456	edid[13] = width >> 8;
457	edid[14] = height & 0xff;
458	edid[15] = height >> 8;
459	edid[54] = clock & 0xff;
460	edid[55] = clock >> 8;
461	edid[56] = width & 0xff;
462	edid[58] = (width >> 4) & 0xf0;
463	edid[59] = height & 0xff;
464	edid[61] = (height >> 4) & 0xf0;
465	for (i = 0; i < EDID_SIZE - 1; ++i)
466	sum += edid[i];
467	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
468	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
469	}
470
471	static int vbox_get_modes(struct drm_connector *connector)
472	{
473	struct vbox_connector *vbox_connector = NULL;
474	struct drm_display_mode *mode = NULL;
475	struct vbox_private *vbox = NULL;
476	unsigned num_modes = 0;
477	int preferred_width, preferred_height;
478
479	vbox_connector = to_vbox_connector(connector);
480	vbox = connector->dev->dev_private;
481	/* Heuristic: we do not want to tell the host that we support dynamic
482	* resizing unless we feel confident that the user space client using
483	* the video driver can handle hot-plug events. So the first time modes
484	* are queried after a "master" switch we tell the host that we do not,
485	* and immediately after we send the client a hot-plug notification as
486	* a test to see if they will respond and query again.
487	* That is also the reason why capabilities are reported to the host at
488	* this place in the code rather than elsewhere.
489	* We need to report the flags location before reporting the IRQ
490	* capability. */
491	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->vram_map_start
492	+ vbox->host_flags_offset);
493	if (vbox_connector->vbox_crtc->crtc_id == 0)
494	vbox_report_caps(vbox);
495	if (!vbox->initial_mode_queried) {
496	if (vbox_connector->vbox_crtc->crtc_id == 0) {
497	vbox->initial_mode_queried = true;
498	vbox_report_hotplug(vbox);
499	}
500	return drm_add_modes_noedid(connector, 800, 600);
501	}
502	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
503	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
504	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
505	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
506	false, false);
507	if (mode)
508	{
509	mode->type \|= DRM_MODE_TYPE_PREFERRED;
510	drm_mode_probed_add(connector, mode);
511	++num_modes;
512	}
513	vbox_set_edid(connector, preferred_width, preferred_height);
514	return num_modes;
515	}
516
517	static int vbox_mode_valid(struct drm_connector *connector,
518	struct drm_display_mode *mode)
519	{
520	return MODE_OK;
521	}
522
523	static void vbox_connector_destroy(struct drm_connector *connector)
524	{
525	struct vbox_connector *vbox_connector = NULL;
526
527	vbox_connector = to_vbox_connector(connector);
528	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
529	drm_sysfs_connector_remove(connector);
530	#else
531	drm_connector_unregister(connector);
532	#endif
533	drm_connector_cleanup(connector);
534	kfree(connector);
535	}
536
537	static enum drm_connector_status
538	vbox_connector_detect(struct drm_connector *connector, bool force)
539	{
540	struct vbox_connector *vbox_connector = NULL;
541
542	(void) force;
543	vbox_connector = to_vbox_connector(connector);
544	return vbox_connector->mode_hint.disconnected ?
545	connector_status_disconnected : connector_status_connected;
546	}
547
548	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
549	{
550	struct vbox_connector *vbox_connector;
551	struct drm_device *dev;
552	struct drm_display_mode mode, iterator;
553
554	vbox_connector = to_vbox_connector(connector);
555	dev = vbox_connector->base.dev;
556	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
557	{
558	list_del(&mode->head);
559	drm_mode_destroy(dev, mode);
560	}
561	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
562	}
563
564	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
565	.mode_valid = vbox_mode_valid,
566	.get_modes = vbox_get_modes,
567	.best_encoder = vbox_best_single_encoder,
568	};
569
570	static const struct drm_connector_funcs vbox_connector_funcs = {
571	.dpms = drm_helper_connector_dpms,
572	.detect = vbox_connector_detect,
573	.fill_modes = vbox_fill_modes,
574	.destroy = vbox_connector_destroy,
575	};
576
577	static int vbox_connector_init(struct drm_device *dev,
578	struct vbox_crtc *vbox_crtc,
579	struct drm_encoder *encoder)
580	{
581	struct vbox_connector *vbox_connector;
582	struct drm_connector *connector;
583
584	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
585	if (!vbox_connector)
586	return -ENOMEM;
587
588	connector = &vbox_connector->base;
589	vbox_connector->vbox_crtc = vbox_crtc;
590
591	drm_connector_init(dev, connector, &vbox_connector_funcs,
592	DRM_MODE_CONNECTOR_VGA);
593	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
594
595	connector->interlace_allowed = 0;
596	connector->doublescan_allowed = 0;
597
598	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
599	drm_mode_create_suggested_offset_properties(dev);
600	drm_object_attach_property(&connector->base,
601	dev->mode_config.suggested_x_property, 0);
602	drm_object_attach_property(&connector->base,
603	dev->mode_config.suggested_y_property, 0);
604	#endif
605	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
606	drm_sysfs_connector_add(connector);
607	#else
608	drm_connector_register(connector);
609	#endif
610
611	drm_mode_connector_attach_encoder(connector, encoder);
612
613	return 0;
614	}
615
616	int vbox_mode_init(struct drm_device *dev)
617	{
618	struct vbox_private *vbox = dev->dev_private;
619	struct drm_encoder *encoder;
620	struct vbox_crtc *vbox_crtc;
621	unsigned i;
622	/* vbox_cursor_init(dev); */
623	for (i = 0; i < vbox->num_crtcs; ++i)
624	{
625	vbox_crtc = vbox_crtc_init(dev, i);
626	if (!vbox_crtc)
627	return -ENOMEM;
628	encoder = vbox_encoder_init(dev, i);
629	if (!encoder)
630	return -ENOMEM;
631	vbox_connector_init(dev, vbox_crtc, encoder);
632	}
633	return 0;
634	}
635
636	void vbox_mode_fini(struct drm_device *dev)
637	{
638	/* vbox_cursor_fini(dev); */
639	}
640
641
642	/** Copy the ARGB image and generate the mask, which is needed in case the host
643	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
644	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
645	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
646	size_t mask_size)
647	{
648	unsigned i, j;
649	size_t line_size = (width + 7) / 8;
650
651	memcpy(dst + mask_size, src, width * height * 4);
652	for (i = 0; i < height; ++i)
653	for (j = 0; j < width; ++j)
654	if (((uint32_t )src)[i width + j] > 0xf0000000)
655	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
656	}
657
658	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
659	uint32_t handle, uint32_t width, uint32_t height,
660	int32_t hot_x, int32_t hot_y)
661	{
662	struct vbox_private *vbox = crtc->dev->dev_private;
663	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
664	struct drm_gem_object *obj;
665	struct vbox_bo *bo;
666	int ret, rc;
667	struct ttm_bo_kmap_obj uobj_map;
668	u8 *src;
669	u8 *dst = NULL;
670	u32 caps = 0;
671	size_t data_size, mask_size;
672	bool src_isiomem;
673
674	/* Re-set this regularly as in 5.0.20 and earlier the information was lost
675	* on save and restore. */
676	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
677	vbox->input_mapping_width,
678	vbox->input_mapping_height);
679	if (!handle) {
680	bool cursor_enabled = false;
681	struct drm_crtc *crtci;
682
683	/* Hide cursor. */
684	vbox_crtc->cursor_enabled = false;
685	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
686	if (to_vbox_crtc(crtci)->cursor_enabled)
687	cursor_enabled = true;
688	if (!cursor_enabled)
689	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
690	return 0;
691	}
692	vbox_crtc->cursor_enabled = true;
693	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
694	\|\| width == 0 \|\| height == 0)
695	return -EINVAL;
696	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
697	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
698	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
699	if (ret)
700	return ret;
701	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
702	/* -EINVAL means cursor_set2() not supported, -EAGAIN means
703	* retry at once. */
704	return -EBUSY;
705
706	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
707	obj = drm_gem_object_lookup(file_priv, handle);
708	#else
709	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
710	#endif
711	if (obj)
712	{
713	bo = gem_to_vbox_bo(obj);
714	ret = vbox_bo_reserve(bo, false);
715	if (!ret)
716	{
717	/* The mask must be calculated based on the alpha channel, one bit
718	* per ARGB word, and must be 32-bit padded. */
719	mask_size = ((width + 7) / 8 * height + 3) & ~3;
720	data_size = width * height * 4 + mask_size;
721	vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
722	vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
723	vbox->cursor_width = width;
724	vbox->cursor_height = height;
725	vbox->cursor_data_size = data_size;
726	dst = vbox->cursor_data;
727	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
728	if (!ret)
729	{
730	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
731	if (!src_isiomem)
732	{
733	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
734	\| VBOX_MOUSE_POINTER_SHAPE
735	\| VBOX_MOUSE_POINTER_ALPHA;
736	copy_cursor_image(src, dst, width, height, mask_size);
737	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
738	vbox->cursor_hot_x,
739	vbox->cursor_hot_y,
740	width, height, dst,
741	data_size);
742	ret = rc == VINF_SUCCESS ? 0
743	: rc == VERR_NO_MEMORY ? -ENOMEM
744	: rc == VERR_NOT_SUPPORTED ? -EBUSY
745	: -EINVAL;
746	}
747	else
748	DRM_ERROR("src cursor bo should be in main memory\n");
749	ttm_bo_kunmap(&uobj_map);
750	}
751	else
752	vbox->cursor_data_size = 0;
753	vbox_bo_unreserve(bo);
754	}
755	drm_gem_object_unreference_unlocked(obj);
756	}
757	else
758	{
759	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
760	ret = -ENOENT;
761	}
762	return ret;
763	}
764
765	static int vbox_cursor_move(struct drm_crtc *crtc,
766	int x, int y)
767	{
768	struct vbox_private *vbox = crtc->dev->dev_private;
769	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
770	\| VBOX_MOUSE_POINTER_SHAPE
771	\| VBOX_MOUSE_POINTER_ALPHA;
772	uint32_t host_x, host_y;
773	uint32_t hot_x = 0;
774	uint32_t hot_y = 0;
775	int rc;
776
777	/* We compare these to unsigned later and don't need to handle negative. */
778	if (x + crtc->x < 0 \|\| y + crtc->y < 0 \|\| vbox->cursor_data_size == 0)
779	return 0;
780	rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc->x,
781	y + crtc->y, &host_x, &host_y);
782	/* Work around a bug after save and restore in 5.0.20 and earlier. */
783	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
784	return rc == VINF_SUCCESS ? 0
785	: rc == VERR_NO_MEMORY ? -ENOMEM
786	: -EINVAL;
787	if (x + crtc->x < host_x)
788	hot_x = min(host_x - x - crtc->x, vbox->cursor_width);
789	if (y + crtc->y < host_y)
790	hot_y = min(host_y - y - crtc->y, vbox->cursor_height);
791	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
792	return 0;
793	vbox->cursor_hot_x = hot_x;
794	vbox->cursor_hot_y = hot_y;
795	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
796	vbox->cursor_width, vbox->cursor_height,
797	vbox->cursor_data,
798	vbox->cursor_data_size);
799	return rc == VINF_SUCCESS ? 0
800	: rc == VERR_NO_MEMORY ? -ENOMEM
801	: rc == VERR_NOT_SUPPORTED ? -EBUSY
802	: -EINVAL;
803	}

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 64400

Download in other formats: